espinobj

Im working on a circuit to work off of a car batt, and well to be honest I dont know where to go. Would you be willing to give me some help maybe if you have it some where a diagram? I have 10 LED's and I want 2 sets of five to flash more like strobe to be honest. This is the info on the LED's Luminous Intensity: 27000mcd typ. @ 20mA Max Forward Current: 30mA Pulse Current: 100mA for <= 10ms, duty <= 1/10 Forward Voltage: 3.2V typ. 3.5V max @ 20mA Max Reverse Voltage: 5V Power Dissipation: 105mW Operating Temp: -30 to +85 C Soldering Temp: 265 C for 10 secs Max Reverse Current: 50uA @ 5V I would like it to flash very quickly 3 times then switch to the other side. Is there a way to control the speed and number of flashes? And how does it work being only 12v in but the lights are going to drain 32v? And a second question I would like a megaphone was well. Something that has like a siren, some other sounds, that old chitty chitty bang bang car horn would fricken awesome, and a microphone input would be cool. But this is secondary to the flashing lights. Is any of the possible? Thank you!